Social media use sometimes involves negative interactions between users. Angry or emotional conversations can lead to real-world interactions, which can get users into dangerous situations. Some users have experienced threats of violence online and have feared these threats manifesting themselves offline. Related issues include cyberbullying, online harassment, and 'trolling'. According to cyberbullying statistics from the i-Safe Foundation, over half of adolescents and teens have been bullied online, and about the same number have engaged in cyberbullying. Both the bully and the victim are negatively affected, and the intensity, duration, and frequency of bullying are the three aspects that increase the negative effects on both of them. Social comparison One phenomenon that is commonly studied with social media is the issue of social comparison. People compare their own lives to the lives of their friends through their friends' posts. Because people are motivated to portray themselves in a way that is appropriate to the situation and serves their best interests, often the things posted online are the positive aspects of people's lives, making other people question why their own lives are not as exciting or fulfilling. One study in 2017 found that problematic social media use (i.e., feeling addicted to social media) was related to lower life satisfaction and self-esteem scores; the authors speculate that users may feel if their life is not exciting enough to put online it is not as good as their friends or family. Studies have shown that self-comparison on social media can have dire effects on physical and mental health because they give us the ability to seek approval and compare ourselves. In one study, women reported that social media are the most influential sources of their body image satisfaction; while men reported them as the second most impacting factor. Social media has allowed for people to be constantly surrounded and aware of celebrity images and influencers who hold strong online presence with the number of followers they have. This constant online presence has meant that people are far more aware of what others look like and as such body comparisons have become an issue, as people are far more aware of what the desired body type is. A study produced by King university showed that 87% of women and 65% of men compared themselves to images found on social media. There are efforts to combat these negative effects, such as the use of the tag